Supro Boost Guitar Effect Pedal 1303

£199.00 GBP£249.00
Tax included. Shipping calculated at checkout.

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FREE Setup with guitars over £299

Our in house Luthiers QC and Setup every guitar we sell above £299.
Please get in touch if you have any questions regarding setups.

Shipping Price Guide
Christmas 2023 Shipping Cut-off Dates

For Standard Delivery Monday 18th December - Orders must be placed by 1pm. 
(Please note we can not gaurantee it will arrive before as this service is down to Royal Mail. If you want a gaurantee please select express shipping at checkout*)

For Express Delivery we advise you get your order in by 1pm on 20th December. 
We use APC Overnight for shipping express parcels, and they are usually very good. 

Shipping Pricing Guide

Standard Delivery for Strings + Picks - £1.50

Standard Delievery for Accessories + Vinyl Records - £3.50

Express Guitar & Amp Delivery (Next Working Day on orders placed before 1PM) - £9.99

Express Guitar & Amp Shipping (Next Working Day on orders placed before 1PM)  - FREE (Orders over £299)

There will be a small surcharge for Scottish Highlands & Ireland, please contact us for more info. 

Dispatch Times

We aim to dispatch guitar orders SAME DAY, if you place your order before 1PM
Depending on the time of year this may change.
The reason we don't always ship immediately, is all our guitars go through our workshop before shipping, to ensure it's setup and playing great for you.

If you require your guitar on a specific date, please get in touch with us after you place your order.

International Shipping

Shipping to most of Europe will be £80 via UPS. Please note, we're not liable for any import duty or charges you may incur due to Brexit. Please contact us for a quote.

USA Shipping £150 via UPS. - (Please contact us for a quote).

Rest of World £POA (Please contact us for a quote).

We expertly pack every item we send included in the price. 

Please get in touch with us if you have any questions. 
Sales@mayalls.co.uk | 01492 588279

14 DAY Returns Policy

We stand by our customers! If you're not happy with your purchase, we will help you find something else!

We offer 14 day returns on all guitars.


Supro Boost is a J-FET based pedal that delivers up to 20dB of noiseless gain boost plus optional treble cut or bass cut to contour your sound. 

The Supro Boost pedal sports a simple control layout with a single Volume knob and an oversized toggle switch to select BRIGHT, FLAT or DARK overall frequency response. The BRIGHT mode enables a 6dB / octave HP (high pass) filter for thinning out humbucker guitars when adding boost to increase sparkle and prevent mud. The DARK mode enables a 6dB / octave LP (low pass) filter for fattening up single coil guitars when adding boost to increase warmth and prevent harshness. Taking the boost pedal one step further, the Supro Boost offers a TRS port for expression pedal control of the VOLUME knob.

Features:
• Frequency linear boost up to 20db
• 6db per octave High Pass Filter option
• 6db per octave Low Pass Filter option
• Expression pedal control for VOLUME
• Accepts standard 2.1mm neg. tip power supply
• Runs on 9V battery (included)
• Current Draw below 20mA
• Original circuit design by Thomas Elliott